Suppose the company purchases the following asset: Cost = $20,000 ($18,000+ $2,000 for shipping and install) Residual value = $5,000 (estimated selling price in 5 years). Expected useful life = 5 years What is the amount of depreciation expense in year 4? Assume Straight-line method $4,000 $2,000 $3,000 05:47 15:50 $12,000 15